CVE-2025-39697

MEDIUM EPSS 3.1%
Published Sep 5, 20259mo ago · Modified Jun 17, 20261w ago
4.7 CVSS 3.1
Medium
Find Similar
Published Sep 5, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: NFS: Fix a race when updating an existing write After nfs_lock_and_join_requests() tests for whether the request is still attached to the mapping, nothing prevents a call to nfs_inode_remove_request() from succeeding until we actually lock the page group. The reason is that whoever called nfs_inode_remove_request() doesn't necessarily have a lock on the page group head. So in order to avoid races, let's take the page group lock earlier in nfs_lock_and_join_requests(), and hold it across the removal of the request in nfs_inode_remove_request().

CVSS Details

Base Score
4.7
Exploitability
1.0
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
3.1% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-362

Affected Products 9

VendorProductVersionRange
linuxlinux_kernel*≥4.14  –  <5.10.242
linuxlinux_kernel*≥5.11  –  <5.15.191
linuxlinux_kernel*≥5.16  –  <6.1.150
linuxlinux_kernel*≥6.2  –  <6.6.104
linuxlinux_kernel*≥6.7  –  <6.12.44
linuxlinux_kernel*≥6.13  –  <6.16.4
linuxlinux_kernel6.17any
linuxlinux_kernel6.17any
debiandebian_linux11.0any

References 11

  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-032379.html
  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-082556.html
  • git.kernel.org https://git.kernel.org/stable/c/0ff42a32784e0f2cb46a46da8e9f473538c13e1b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/181feb41f0b268e6288bf9a7b984624d7fe2031d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/202a3432d21ac060629a760fff3b0a39859da3ea
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/76d2e3890fb169168c73f2e4f8375c7cc24a765e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/92278ae36935a54e65fef9f8ea8efe7e80481ace
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c32e3c71aaa1c1ba05da88605e2ddd493c58794f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f230d40147cc37eb3aef4d50e2e2c06ea73d9a77
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
    Mailing ListThird Party Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
    Mailing ListThird Party Advisory

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0ff42a32784e0f2cb46a46da8e9f473538c13e1b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/181feb41f0b268e6288bf9a7b984624d7fe2031d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/202a3432d21ac060629a760fff3b0a39859da3ea
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/76d2e3890fb169168c73f2e4f8375c7cc24a765e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/92278ae36935a54e65fef9f8ea8efe7e80481ace
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c32e3c71aaa1c1ba05da88605e2ddd493c58794f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f230d40147cc37eb3aef4d50e2e2c06ea73d9a77
    Patch